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  3. Microsoft OLE Remote Buffer Overflow Vulnerability

Microsoft OLE Remote Buffer Overflow Vulnerability

Risk

High

Date Discovered

February 8, 2005

Description

Microsoft OLE is reported prone to a remote buffer overflow vulnerability. This issue arises because the application fails to perform boundary checks before copying user-supplied data to sensitive process buffers. A remote attacker may leverage this vulnerability to execute arbitrary code on a vulnerable computer. If a vulnerable user opens a malicious file through any application that supports OLE, the attacker-supplied arbitrary code may be executed in the context of the user. Reportedly, user interaction is required to exploit this condition in Microsoft Windows 2000, Windows XP, and Windows Server 2003. An anonymous remote user can exploit this issue in various versions of Microsoft Exchange Server because Exchange Server uses the affected Windows OLE component. A successful attack can allow the attacker to gain SYSTEM privileges as the Microsoft Exchange Server runs with elevated privileges. Affected Microsoft Exchange Server versions include Microsoft Exchange 2000 Server, Microsoft Exchange Server 2003, Microsoft Exchange Server 5.0, and Microsoft Exchange Server 5.5. Other applications that use the affected Windows OLE component include Microsoft Office XP Service Pack 3, Microsoft Office XP Service Pack 2, Microsoft Office 2003 Service Pack 1, and Microsoft Office 2003.

Technologies Affected

  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Advanced Server SP1
  • Microsoft Windows 2000 Advanced Server SP2
  • Microsoft Windows 2000 Advanced Server SP3
  • Microsoft Windows 2000 Advanced Server SP4
  • Microsoft Windows 2000 Datacenter Server
  • Microsoft Windows 2000 Datacenter Server SP1
  • Microsoft Windows 2000 Datacenter Server SP2
  • Microsoft Windows 2000 Datacenter Server SP3
  • Microsoft Windows 2000 Datacenter Server SP4
  • Microsoft Windows 2000 Professional
  • Microsoft Windows 2000 Professional SP1
  • Microsoft Windows 2000 Professional SP2
  • Microsoft Windows 2000 Professional SP3
  • Microsoft Windows 2000 Professional SP4
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Server SP1
  • Microsoft Windows 2000 Server SP2
  • Microsoft Windows 2000 Server SP3
  • Microsoft Windows 2000 Server SP4
  • Microsoft Windows 98
  • Microsoft Windows 98SE
  • Microsoft Windows ME
  • Microsoft Windows Server 2003 Datacenter Edition
  • Microsoft Windows Server 2003 Datacenter Edition Itanium
  • Microsoft Windows Server 2003 Enterprise Edition
  • Microsoft Windows Server 2003 Enterprise Edition Itanium
  • Microsoft Windows Server 2003 Standard Edition
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows XP 64-bit Edition
  • Microsoft Windows XP 64-bit Edition SP1
  • Microsoft Windows XP 64-bit Edition Version 2003
  • Microsoft Windows XP Home
  • Microsoft Windows XP Home SP1
  • Microsoft Windows XP Home SP2
  • Microsoft Windows XP Media Center Edition
  • Microsoft Windows XP Media Center Edition SP1
  • Microsoft Windows XP Media Center Edition SP2
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Professional SP1
  • Microsoft Windows XP Professional SP2
  • Microsoft Windows XP Tablet PC Edition
  • Microsoft Windows XP Tablet PC Edition SP1
  • Microsoft Windows XP Tablet PC Edition SP2
  • Nortel Networks IP softphone 2050
  • Nortel Networks Mobile Voice Client 2050
  • Nortel Networks Optivity Network Management System
  • Nortel Networks Symposium Call Center Server (SCCS)
  • Nortel Networks Symposium Express Call Center (SECC)
  • Nortel Networks Symposium TAPI Service Provider
  • Nortel Networks Symposium Web Center Portal (SWCP)
  • Nortel Networks Symposium Web Client

Recommendations

Block external access at the network boundary, unless external parties require service.

Access to affected computers should be filtered at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of exploitation.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.

Deploy network intrusion detection systems to monitor all network traffic for signs of suspicious or anomalous activity. This may aid in detecting attempts to exploit latent vulnerabilities or in detecting malicious activity that occurs as a result of successful exploitation.

Do not accept or execute files from untrusted or unknown sources.

Users should not accept files from untrusted or unknown sources, as they may be malicious in nature. Avoid opening email attachments from unknown or questionable sources.

Do not follow links provided by unknown or untrusted sources.

Users should avoid Web sites of questionable integrity and not follow links supplied by unknown or untrusted sources.

Run all software as a nonprivileged user with minimal access rights.

Users should perform all non-administrative tasks as an unprivileged user with minimal access rights. This will limit the impact of latent vulnerabilities.
Microsoft has released updates to address this vulnerability on supported platforms. Nortel Networks has released security advisory 2005005514 acknowledging this issue. Please the referenced advisory for further information.

Credits

This discoverer of this issue is currently unknown. Microsoft reported this vulnerability.
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.

Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
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